diff --git a/cmd/gojsonschema/main.go b/cmd/gojsonschema/main.go
index 91c77876..4b550341 100644
--- a/cmd/gojsonschema/main.go
+++ b/cmd/gojsonschema/main.go
@@ -57,7 +57,7 @@ var rootCmd = &cobra.Command{
 			DefaultOutputName:  defaultOutput,
 			DefaultPackageName: defaultPackage,
 			SchemaMappings:     []generator.SchemaMapping{},
-			ResolveExtensions:  append([]string{""}, resolveExtensions...),
+			ResolveExtensions:  resolveExtensions,
 		}
 		for _, id := range allKeys(schemaPackageMap, schemaOutputMap, schemaRootTypeMap) {
 			mapping := generator.SchemaMapping{SchemaID: id}
diff --git a/pkg/generator/generate.go b/pkg/generator/generate.go
index 6492c545..32bbe51e 100644
--- a/pkg/generator/generate.go
+++ b/pkg/generator/generate.go
@@ -4,6 +4,7 @@ import (
 	"errors"
 	"fmt"
 	"go/format"
+	"io"
 	"os"
 	"path/filepath"
 	"reflect"
@@ -116,11 +117,12 @@ func (g *Generator) loadSchemaFromFile(fileName, parentFileName string) (*schema
 		fileName = filepath.Join(filepath.Dir(parentFileName), fileName)
 	}
 
-	for i, ext := range g.config.ResolveExtensions {
+	exts := append([]string{""}, g.config.ResolveExtensions...)
+	for i, ext := range exts {
 		qualified := fileName + ext
 
 		// Poor man's resolving loop
-		if i < len(g.config.ResolveExtensions)-1 && !fileExists(qualified) {
+		if i < len(exts)-1 && !fileExists(qualified) {
 			continue
 		}